What to Watch Sunday: Boardwalk Finale, Once, Revenge and Dead Cliffhangers and More

On TV this Sunday: Once Upon a Time‘s princesses and Revenge‘s queen of the Red Sharpies have their last outings before breaking for the holiday, Dexter comes face to face with Hannah’s pop, famous folks reward CNN Heroes and the Nuck stops here in Boardwalk Empire‘s season finale. As a supplement to TVLine’s original features (always linked within), here are 10 programs to keep on your radar.

8 pm Dog With a Blog (Disney Channel)| As the family’s first Christmas together approaches, Avery preps Tyler, Chloe and Stan for the terrible gifts that Ellen traditionally gives. (An all-new, holiday-themed Shake It Up follows at 8:30 pm.)

9 pm Boardwalk Empire (HBO)| Season 3 finale: Nucky cedes control of one of his prized assets to Rothstein, hoping that the move will weaken Gyp’s alliance with Masseria so Nucky can reclaim Atlantic City. (You can raise a glass to this: The series is already renewed. Also, get scoop on a recent death and a deleted scene.)

9 pm The Walking Dead (AMC)| When the people of Woodbury are thrown into uncharted territory, Andrea steps up in the show’s midseason finale. (Let’s hope the Governor then doesn’t creepily sweet-talk her into stepping down soon after.)

9 pm Masterpiece Classic (PBS)| If you’re behind on your visits to Downton Abbey, here’s your chance to catch up. PBS begins re-airing Season 2 of the British drama tonight and will continue to do so on Sundays until the Jan. 6 Season 3 premiere.

9 pm CNN Heroes: An All-Star Tribute (CNN) | This live special, hosted by anchor Anderson Cooper, awards 10 do-gooders with $50,000 grants to continue their work improving the world – and one will receive an additional $250,000. Rainn Wilson (The Office), Jane Lynch (Glee) and Miranda Cosgrove (iCarly) are among the celebs expected to be on hand.

9:30 pm*The Good Wife (CBS)| As Will defends a man accused of murder, Alicia attempts to influence the outcome of his case by aiding the prosecutor in a nearby county who’s trying another man for the same case. Hamish Linklater (The New Adventures of Old Christine) guest-stars. *Tonight’s CBS start times are adjusted because of a football double-header earlier in the day.